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<a name="1" href="#1">1</a>   <strong class="jxr_keyword">package</strong> org.methodize.nntprss.feed.parser;
<a name="2" href="#2">2</a>   
<a name="3" href="#3">3</a>   <em class="jxr_comment">/*<em class="jxr_comment"> -----------------------------------------------------------</em></em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * nntp//rss - a bridge between the RSS world and NNTP clients</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * Copyright (c) 2002-2007 Jason Brome.  All Rights Reserved.</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> *</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * email: nntprss@methodize.org</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> * mail:  Jason Brome</em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *        PO Box 222-WOB</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *        West Orange</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> *        NJ 07052-0222</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * </em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * This file is part of nntp//rss</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * </em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> * nntp//rss is free software; you can redistribute it </em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> * and/or modify it under the terms of the GNU General </em>
<a name="17" href="#17">17</a>  <em class="jxr_comment"> * Public License as published by the Free Software Foundation; </em>
<a name="18" href="#18">18</a>  <em class="jxr_comment"> * either version 2 of the License, or (at your option) any </em>
<a name="19" href="#19">19</a>  <em class="jxr_comment"> * later version.</em>
<a name="20" href="#20">20</a>  <em class="jxr_comment"> *</em>
<a name="21" href="#21">21</a>  <em class="jxr_comment"> * This program is distributed in the hope that it will be </em>
<a name="22" href="#22">22</a>  <em class="jxr_comment"> * useful, but WITHOUT ANY WARRANTY; without even the implied </em>
<a name="23" href="#23">23</a>  <em class="jxr_comment"> * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR </em>
<a name="24" href="#24">24</a>  <em class="jxr_comment"> * PURPOSE.  See the GNU General Public License for more </em>
<a name="25" href="#25">25</a>  <em class="jxr_comment"> * details.</em>
<a name="26" href="#26">26</a>  <em class="jxr_comment"> *</em>
<a name="27" href="#27">27</a>  <em class="jxr_comment"> * You should have received a copy of the GNU General Public </em>
<a name="28" href="#28">28</a>  <em class="jxr_comment"> * License along with this program; if not, write to the </em>
<a name="29" href="#29">29</a>  <em class="jxr_comment"> * Free Software Foundation, Inc., 59 Temple Place, Suite 330, </em>
<a name="30" href="#30">30</a>  <em class="jxr_comment"> * Boston, MA  02111-1307  USA</em>
<a name="31" href="#31">31</a>  <em class="jxr_comment"> * ----------------------------------------------------- */</em>
<a name="32" href="#32">32</a>  
<a name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.security.MessageDigest;
<a name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> java.security.NoSuchAlgorithmException;
<a name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> java.text.ParseException;
<a name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> java.text.SimpleDateFormat;
<a name="38" href="#38">38</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
<a name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.util.Calendar;
<a name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
<a name="41" href="#41">41</a>  <strong class="jxr_keyword">import</strong> java.util.HashMap;
<a name="42" href="#42">42</a>  <strong class="jxr_keyword">import</strong> java.util.HashSet;
<a name="43" href="#43">43</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a name="44" href="#44">44</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a name="45" href="#45">45</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
<a name="46" href="#46">46</a>  <strong class="jxr_keyword">import</strong> java.util.TimeZone;
<a name="47" href="#47">47</a>  
<a name="48" href="#48">48</a>  <strong class="jxr_keyword">import</strong> javax.mail.internet.MailDateFormat;
<a name="49" href="#49">49</a>  
<a name="50" href="#50">50</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
<a name="51" href="#51">51</a>  <strong class="jxr_keyword">import</strong> org.methodize.nntprss.feed.Channel;
<a name="52" href="#52">52</a>  <strong class="jxr_keyword">import</strong> org.methodize.nntprss.feed.Item;
<a name="53" href="#53">53</a>  <strong class="jxr_keyword">import</strong> org.methodize.nntprss.feed.db.ChannelDAO;
<a name="54" href="#54">54</a>  <strong class="jxr_keyword">import</strong> org.methodize.nntprss.util.RSSHelper;
<a name="55" href="#55">55</a>  <strong class="jxr_keyword">import</strong> org.methodize.nntprss.util.XMLHelper;
<a name="56" href="#56">56</a>  <strong class="jxr_keyword">import</strong> org.w3c.dom.Element;
<a name="57" href="#57">57</a>  <strong class="jxr_keyword">import</strong> org.w3c.dom.Node;
<a name="58" href="#58">58</a>  <strong class="jxr_keyword">import</strong> org.w3c.dom.NodeList;
<a name="59" href="#59">59</a>  
<a name="60" href="#60">60</a>  <em class="jxr_javadoccomment">/**</em>
<a name="61" href="#61">61</a>  <em class="jxr_javadoccomment"> * @author Jason Brome &lt;jason@methodize.org&gt;</em>
<a name="62" href="#62">62</a>  <em class="jxr_javadoccomment"> * @version $Id: RSSParser.java,v 1.13 2007/12/17 04:13:45 jasonbrome Exp $</em>
<a name="63" href="#63">63</a>  <em class="jxr_javadoccomment"> */</em>
<a name="64" href="#64">64</a>  
<a name="65" href="#65">65</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/methodize/nntprss/feed/parser/RSSParser.html">RSSParser</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../org/methodize/nntprss/feed/parser/GenericParser.html">GenericParser</a> {
<a name="66" href="#66">66</a>  
<a name="67" href="#67">67</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> ThreadLocal dcDates = <strong class="jxr_keyword">new</strong> ThreadLocal() {
<a name="68" href="#68">68</a>          <strong class="jxr_keyword">public</strong> Object initialValue() {
<a name="69" href="#69">69</a>              SimpleDateFormat[] dcDateArray =
<a name="70" href="#70">70</a>                  <strong class="jxr_keyword">new</strong> SimpleDateFormat[] {
<a name="71" href="#71">71</a>                      <strong class="jxr_keyword">new</strong> SimpleDateFormat(<span class="jxr_string">"yyyy-MM-dd'T'HH:mm:ssz"</span>),
<a name="72" href="#72">72</a>                      <strong class="jxr_keyword">new</strong> SimpleDateFormat(<span class="jxr_string">"yyyy-MM-dd HH:mm:ssz"</span>),
<a name="73" href="#73">73</a>                      <strong class="jxr_keyword">new</strong> SimpleDateFormat(<span class="jxr_string">"yyyy-MM-dd'T'HH:mm:ss'Z'"</span>),
<a name="74" href="#74">74</a>                      <strong class="jxr_keyword">new</strong> SimpleDateFormat(<span class="jxr_string">"yyyy-MM-dd HH:mm:ss'Z'"</span>),
<a name="75" href="#75">75</a>                      <strong class="jxr_keyword">new</strong> SimpleDateFormat(<span class="jxr_string">"yyyy-MM-dd"</span>)};
<a name="76" href="#76">76</a>  
<a name="77" href="#77">77</a>              TimeZone gmt = TimeZone.getTimeZone(<span class="jxr_string">"GMT"</span>);
<a name="78" href="#78">78</a>              <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> tz = 0; tz &lt; dcDateArray.length; tz++) {
<a name="79" href="#79">79</a>                  dcDateArray[tz].setTimeZone(gmt);
<a name="80" href="#80">80</a>              }
<a name="81" href="#81">81</a>  
<a name="82" href="#82">82</a>              <strong class="jxr_keyword">return</strong> dcDateArray;
<a name="83" href="#83">83</a>          }
<a name="84" href="#84">84</a>      };
<a name="85" href="#85">85</a>  
<a name="86" href="#86">86</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> ThreadLocal date822Parser = <strong class="jxr_keyword">new</strong> ThreadLocal() {
<a name="87" href="#87">87</a>          <strong class="jxr_keyword">public</strong> Object initialValue() {
<a name="88" href="#88">88</a>              <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> MailDateFormat();
<a name="89" href="#89">89</a>          }
<a name="90" href="#90">90</a>      };
<a name="91" href="#91">91</a>  
<a name="92" href="#92">92</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/methodize/nntprss/feed/parser/GenericParser.html">GenericParser</a> rssParser = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/methodize/nntprss/feed/parser/RSSParser.html">RSSParser</a>();
<a name="93" href="#93">93</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> Logger log = Logger.getLogger(RSSParser.<strong class="jxr_keyword">class</strong>);
<a name="94" href="#94">94</a>  
<a name="95" href="#95">95</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../../org/methodize/nntprss/feed/parser/RSSParser.html">RSSParser</a>() {
<a name="96" href="#96">96</a>      }
<a name="97" href="#97">97</a>  
<a name="98" href="#98">98</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../../org/methodize/nntprss/feed/parser/GenericParser.html">GenericParser</a> getParser() {
<a name="99" href="#99">99</a>          <strong class="jxr_keyword">return</strong> rssParser;
<a name="100" href="#100">100</a>     }
<a name="101" href="#101">101</a> 
<a name="102" href="#102">102</a>     <em class="jxr_javadoccomment">/**</em>
<a name="103" href="#103">103</a> <em class="jxr_javadoccomment">     * @param docRootElement Root element of feed document</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * @return</em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     */</em>
<a name="106" href="#106">106</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> isParsable(Element docRootElement) {
<a name="107" href="#107">107</a>         <strong class="jxr_keyword">if</strong> (docRootElement.getNodeName().equals(<span class="jxr_string">"rss"</span>)
<a name="108" href="#108">108</a>             || docRootElement.getNodeName().equals(<span class="jxr_string">"rdf:RDF"</span>)) {
<a name="109" href="#109">109</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="110" href="#110">110</a>         } <strong class="jxr_keyword">else</strong> {
<a name="111" href="#111">111</a>             <strong class="jxr_keyword">return</strong> false;
<a name="112" href="#112">112</a>         }
<a name="113" href="#113">113</a>     }
<a name="114" href="#114">114</a> 
<a name="115" href="#115">115</a>     <strong class="jxr_keyword">public</strong> String getFormatVersion(Element docRootElement) {
<a name="116" href="#116">116</a>         String rssVersion;
<a name="117" href="#117">117</a> 
<a name="118" href="#118">118</a>         <strong class="jxr_keyword">if</strong> (docRootElement.getNodeName().equals(<span class="jxr_string">"rss"</span>)) {
<a name="119" href="#119">119</a>             rssVersion = <span class="jxr_string">"RSS "</span> + docRootElement.getAttribute(<span class="jxr_string">"version"</span>);
<a name="120" href="#120">120</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (docRootElement.getNodeName().equals(<span class="jxr_string">"rdf:RDF"</span>)) {
<a name="121" href="#121">121</a>             rssVersion = <span class="jxr_string">"RDF"</span>;
<a name="122" href="#122">122</a>         } <strong class="jxr_keyword">else</strong> {
<a name="123" href="#123">123</a>             rssVersion = <span class="jxr_string">"Unknown RSS"</span>;
<a name="124" href="#124">124</a>         }
<a name="125" href="#125">125</a>         <strong class="jxr_keyword">return</strong> rssVersion;
<a name="126" href="#126">126</a>     }
<a name="127" href="#127">127</a> 
<a name="128" href="#128">128</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> extractFeedInfo(Element docRootElement, <a href="../../../../../org/methodize/nntprss/feed/Channel.html">Channel</a> channel) {
<a name="129" href="#129">129</a>         Element channelElm =
<a name="130" href="#130">130</a>             (Element) docRootElement.getElementsByTagName(<span class="jxr_string">"channel"</span>).item(0);
<a name="131" href="#131">131</a> 
<a name="132" href="#132">132</a>         <em class="jxr_comment">// Read header...</em>
<a name="133" href="#133">133</a>         channel.setTitle(XMLHelper.getChildElementValue(channelElm, <span class="jxr_string">"title"</span>));
<a name="134" href="#134">134</a>         <em class="jxr_comment">// XXX Currently assign channelTitle to author</em>
<a name="135" href="#135">135</a>         channel.setAuthor(channel.getTitle());
<a name="136" href="#136">136</a>         channel.setLink(XMLHelper.getChildElementValue(channelElm, <span class="jxr_string">"link"</span>));
<a name="137" href="#137">137</a>         channel.setDescription(
<a name="138" href="#138">138</a>             XMLHelper.getChildElementValue(channelElm, <span class="jxr_string">"description"</span>));
<a name="139" href="#139">139</a>         channel.setManagingEditor(
<a name="140" href="#140">140</a>             XMLHelper.getChildElementValue(channelElm, <span class="jxr_string">"managingEditor"</span>));
<a name="141" href="#141">141</a>     }
<a name="142" href="#142">142</a> 
<a name="143" href="#143">143</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> processFeedItems(
<a name="144" href="#144">144</a>         Element rootElm,
<a name="145" href="#145">145</a>         <a href="../../../../../org/methodize/nntprss/feed/Channel.html">Channel</a> channel,
<a name="146" href="#146">146</a>         <a href="../../../../../org/methodize/nntprss/feed/db/ChannelDAO.html">ChannelDAO</a> channelDAO,
<a name="147" href="#147">147</a>         <strong class="jxr_keyword">boolean</strong> keepHistory)
<a name="148" href="#148">148</a>         <strong class="jxr_keyword">throws</strong> NoSuchAlgorithmException, IOException {
<a name="149" href="#149">149</a>         Element rssDocElm =
<a name="150" href="#150">150</a>             (Element) rootElm.getElementsByTagName(<span class="jxr_string">"channel"</span>).item(0);
<a name="151" href="#151">151</a>         <em class="jxr_comment">// Check for items within channel element and outside </em>
<a name="152" href="#152">152</a>         <em class="jxr_comment">// channel element</em>
<a name="153" href="#153">153</a>         NodeList itemList = rssDocElm.getElementsByTagName(<span class="jxr_string">"item"</span>);
<a name="154" href="#154">154</a> 
<a name="155" href="#155">155</a>         <strong class="jxr_keyword">if</strong> (itemList.getLength() == 0) {
<a name="156" href="#156">156</a>             itemList = rootElm.getElementsByTagName(<span class="jxr_string">"item"</span>);
<a name="157" href="#157">157</a>         }
<a name="158" href="#158">158</a> 
<a name="159" href="#159">159</a>         Calendar retrievalDate = Calendar.getInstance();
<a name="160" href="#160">160</a>         retrievalDate.add(Calendar.SECOND, -itemList.getLength());
<a name="161" href="#161">161</a> 
<a name="162" href="#162">162</a>         Set currentSignatures = <strong class="jxr_keyword">null</strong>;
<a name="163" href="#163">163</a>         <strong class="jxr_keyword">if</strong> (!keepHistory) {
<a name="164" href="#164">164</a>             currentSignatures = <strong class="jxr_keyword">new</strong> HashSet();
<a name="165" href="#165">165</a>         }
<a name="166" href="#166">166</a> 
<a name="167" href="#167">167</a>         Map newItems = <strong class="jxr_keyword">new</strong> HashMap();
<a name="168" href="#168">168</a>         Map newItemKeys = <strong class="jxr_keyword">new</strong> HashMap();
<a name="169" href="#169">169</a>         <em class="jxr_comment">// orderedItems maintains original document first-to-last order</em>
<a name="170" href="#170">170</a>         <em class="jxr_comment">// Assumption: Items in the RSS document go from most recent</em>
<a name="171" href="#171">171</a>         <em class="jxr_comment">// to earliest.  This is used to assign date/times in a reasonably</em>
<a name="172" href="#172">172</a>         <em class="jxr_comment">// sensible order to those feeds that do not provide either pubDate</em>
<a name="173" href="#173">173</a>         <em class="jxr_comment">// or dc:date</em>
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>         List orderedItems = <strong class="jxr_keyword">new</strong> ArrayList();
<a name="176" href="#176">176</a> 
<a name="177" href="#177">177</a>         <em class="jxr_comment">// Calculate signature</em>
<a name="178" href="#178">178</a>         MessageDigest md = MessageDigest.getInstance(<span class="jxr_string">"MD5"</span>);
<a name="179" href="#179">179</a> 
<a name="180" href="#180">180</a>         <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> itemCount = itemList.getLength() - 1;
<a name="181" href="#181">181</a>             itemCount &gt;= 0;
<a name="182" href="#182">182</a>             itemCount--) {
<a name="183" href="#183">183</a>             Element itemElm = (Element) itemList.item(itemCount);
<a name="184" href="#184">184</a>             String signatureStr = generateItemSignature(md, itemElm);
<a name="185" href="#185">185</a> 
<a name="186" href="#186">186</a>             <strong class="jxr_keyword">if</strong> (!keepHistory) {
<a name="187" href="#187">187</a>                 currentSignatures.add(signatureStr);
<a name="188" href="#188">188</a>             }
<a name="189" href="#189">189</a>             newItems.put(signatureStr, itemElm);
<a name="190" href="#190">190</a>             newItemKeys.put(itemElm, signatureStr);
<a name="191" href="#191">191</a>             orderedItems.add(itemElm);
<a name="192" href="#192">192</a>         }
<a name="193" href="#193">193</a> 
<a name="194" href="#194">194</a>         <strong class="jxr_keyword">if</strong> (newItems.size() &gt; 0) {
<a name="195" href="#195">195</a>             <em class="jxr_comment">// Discover new items...</em>
<a name="196" href="#196">196</a>             Set newItemSignatures =
<a name="197" href="#197">197</a>                 channelDAO.findNewItemSignatures(channel, newItems.keySet());
<a name="198" href="#198">198</a> 
<a name="199" href="#199">199</a>             <strong class="jxr_keyword">if</strong> (newItemSignatures.size() &gt; 0) {
<a name="200" href="#200">200</a>                 <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; orderedItems.size(); i++) {
<a name="201" href="#201">201</a>                     Element itemElm = (Element) orderedItems.get(i);
<a name="202" href="#202">202</a>                     String signatureStr = (String) newItemKeys.get(itemElm);
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>                     <em class="jxr_comment">// If signature is not in new items set, skip...</em>
<a name="205" href="#205">205</a>                     <strong class="jxr_keyword">if</strong> (!newItemSignatures.contains(signatureStr))
<a name="206" href="#206">206</a>                         <strong class="jxr_keyword">continue</strong>;
<a name="207" href="#207">207</a> 
<a name="208" href="#208">208</a>                     String title =
<a name="209" href="#209">209</a>                         XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"title"</span>, <span class="jxr_string">""</span>);
<a name="210" href="#210">210</a>                     String link =
<a name="211" href="#211">211</a>                         XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"link"</span>, <span class="jxr_string">""</span>);
<a name="212" href="#212">212</a> 
<a name="213" href="#213">213</a>                     String guid =
<a name="214" href="#214">214</a>                         XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"guid"</span>);
<a name="215" href="#215">215</a>                     <strong class="jxr_keyword">boolean</strong> guidIsPermaLink = <strong class="jxr_keyword">true</strong>;
<a name="216" href="#216">216</a>                     <strong class="jxr_keyword">if</strong> (guid != <strong class="jxr_keyword">null</strong>) {
<a name="217" href="#217">217</a>                         String guidIsPermaLinkStr =
<a name="218" href="#218">218</a>                             XMLHelper.getChildElementAttributeValue(
<a name="219" href="#219">219</a>                                 itemElm,
<a name="220" href="#220">220</a>                                 <span class="jxr_string">"guid"</span>,
<a name="221" href="#221">221</a>                                 <span class="jxr_string">"isPermaLink"</span>);
<a name="222" href="#222">222</a>                         <strong class="jxr_keyword">if</strong> (guidIsPermaLinkStr != <strong class="jxr_keyword">null</strong>) {
<a name="223" href="#223">223</a>                             guidIsPermaLink =
<a name="224" href="#224">224</a>                                 guidIsPermaLinkStr.equalsIgnoreCase(<span class="jxr_string">"true"</span>);
<a name="225" href="#225">225</a>                         }
<a name="226" href="#226">226</a>                     }
<a name="227" href="#227">227</a> 
<a name="228" href="#228">228</a>                     <em class="jxr_comment">// Handle xhtml:body / content:encoded / description</em>
<a name="229" href="#229">229</a>                     String description = processContent(itemElm);
<a name="230" href="#230">230</a> 
<a name="231" href="#231">231</a>                     String comments =
<a name="232" href="#232">232</a>                         XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"comments"</span>, <span class="jxr_string">""</span>);
<a name="233" href="#233">233</a> 
<a name="234" href="#234">234</a>                     Date pubDate = <strong class="jxr_keyword">null</strong>;
<a name="235" href="#235">235</a>                     String pubDateStr =
<a name="236" href="#236">236</a>                         XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"pubDate"</span>);
<a name="237" href="#237">237</a>                     <strong class="jxr_keyword">if</strong> (pubDateStr != <strong class="jxr_keyword">null</strong> &amp;&amp; pubDateStr.length() &gt; 0) {
<a name="238" href="#238">238</a>                         <em class="jxr_comment">// Parse Date...</em>
<a name="239" href="#239">239</a>                         log.debug(<span class="jxr_string">"pubDate == "</span> + pubDateStr);
<a name="240" href="#240">240</a>                         <strong class="jxr_keyword">try</strong> {
<a name="241" href="#241">241</a>                             pubDate =
<a name="242" href="#242">242</a>                                 ((MailDateFormat) date822Parser.get()).parse(
<a name="243" href="#243">243</a>                                     pubDateStr);
<a name="244" href="#244">244</a>                             log.debug(<span class="jxr_string">"processed pubDate == "</span> + pubDate);
<a name="245" href="#245">245</a>                         } <strong class="jxr_keyword">catch</strong> (ParseException pe) {
<a name="246" href="#246">246</a>                             log.debug(<span class="jxr_string">"Invalid pubDate format - "</span> + pubDateStr);
<a name="247" href="#247">247</a>                         }
<a name="248" href="#248">248</a>                     }
<a name="249" href="#249">249</a> 
<a name="250" href="#250">250</a>                     <strong class="jxr_keyword">if</strong> (pubDate == <strong class="jxr_keyword">null</strong>) {
<a name="251" href="#251">251</a>                         <em class="jxr_comment">// Try for Dublin Core Date</em>
<a name="252" href="#252">252</a>                         String dcDateStr =
<a name="253" href="#253">253</a>                             XMLHelper.getChildElementValueNS(
<a name="254" href="#254">254</a>                                 itemElm,
<a name="255" href="#255">255</a>                                 RSSHelper.XMLNS_DC,
<a name="256" href="#256">256</a>                                 <span class="jxr_string">"date"</span>);
<a name="257" href="#257">257</a>                         <strong class="jxr_keyword">if</strong> (dcDateStr != <strong class="jxr_keyword">null</strong> &amp;&amp; dcDateStr.length() &gt; 0) {
<a name="258" href="#258">258</a>                             log.debug(<span class="jxr_string">"dc:date == "</span> + dcDateStr);
<a name="259" href="#259">259</a> 
<a name="260" href="#260">260</a>                             <strong class="jxr_keyword">if</strong> (dcDateStr.indexOf(<span class="jxr_string">"GMT"</span>) == -1) {
<a name="261" href="#261">261</a>                                 <em class="jxr_comment">// Check for : in RFC822 time zone...</em>
<a name="262" href="#262">262</a>                                 <strong class="jxr_keyword">int</strong> hourColon = dcDateStr.indexOf(<span class="jxr_string">":"</span>);
<a name="263" href="#263">263</a>                                 <strong class="jxr_keyword">if</strong> (hourColon != -1) {
<a name="264" href="#264">264</a>                                     <strong class="jxr_keyword">int</strong> minuteColon =
<a name="265" href="#265">265</a>                                         dcDateStr.indexOf(<span class="jxr_string">":"</span>, hourColon + 1);
<a name="266" href="#266">266</a>                                     <strong class="jxr_keyword">if</strong> (minuteColon != -1) {
<a name="267" href="#267">267</a>                                         <strong class="jxr_keyword">int</strong> timeZoneColon =
<a name="268" href="#268">268</a>                                             dcDateStr.indexOf(
<a name="269" href="#269">269</a>                                                 <span class="jxr_string">":"</span>,
<a name="270" href="#270">270</a>                                                 minuteColon + 1);
<a name="271" href="#271">271</a>                                         <strong class="jxr_keyword">if</strong> (timeZoneColon != -1) {
<a name="272" href="#272">272</a>                                             <strong class="jxr_keyword">if</strong> (dcDateStr.length()
<a name="273" href="#273">273</a>                                                 &gt; timeZoneColon) {
<a name="274" href="#274">274</a>                                                 dcDateStr =
<a name="275" href="#275">275</a>                                                     dcDateStr.substring(
<a name="276" href="#276">276</a>                                                         0,
<a name="277" href="#277">277</a>                                                         timeZoneColon)
<a name="278" href="#278">278</a>                                                         + dcDateStr.substring(
<a name="279" href="#279">279</a>                                                             timeZoneColon + 1);
<a name="280" href="#280">280</a>                                             }
<a name="281" href="#281">281</a>                                         }
<a name="282" href="#282">282</a>                                     }
<a name="283" href="#283">283</a>                                 }
<a name="284" href="#284">284</a> 
<a name="285" href="#285">285</a>                             }
<a name="286" href="#286">286</a> 
<a name="287" href="#287">287</a>                             SimpleDateFormat[] dcDateArray =
<a name="288" href="#288">288</a>                                 (SimpleDateFormat[]) dcDates.get();
<a name="289" href="#289">289</a>                             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> parseCount = 0;
<a name="290" href="#290">290</a>                                 parseCount &lt; dcDateArray.length;
<a name="291" href="#291">291</a>                                 parseCount++) {
<a name="292" href="#292">292</a>                                 <strong class="jxr_keyword">try</strong> {
<a name="293" href="#293">293</a>                                     pubDate =
<a name="294" href="#294">294</a>                                         dcDateArray[parseCount].parse(
<a name="295" href="#295">295</a>                                             dcDateStr);
<a name="296" href="#296">296</a>                                 } <strong class="jxr_keyword">catch</strong> (ParseException pe) {
<a name="297" href="#297">297</a>                                 }
<a name="298" href="#298">298</a>                                 <strong class="jxr_keyword">if</strong> (pubDate != <strong class="jxr_keyword">null</strong>)
<a name="299" href="#299">299</a>                                     <strong class="jxr_keyword">break</strong>;
<a name="300" href="#300">300</a>                             }
<a name="301" href="#301">301</a>                             <strong class="jxr_keyword">if</strong> (pubDate != <strong class="jxr_keyword">null</strong>) {
<a name="302" href="#302">302</a>                                 log.debug(<span class="jxr_string">"processed dc:date == "</span> + pubDate);
<a name="303" href="#303">303</a>                             } <strong class="jxr_keyword">else</strong> {
<a name="304" href="#304">304</a>                                 log.debug(
<a name="305" href="#305">305</a>                                     <span class="jxr_string">"Invalid dc:date format - "</span> + dcDateStr);
<a name="306" href="#306">306</a>                             }
<a name="307" href="#307">307</a>                         }
<a name="308" href="#308">308</a>                     }
<a name="309" href="#309">309</a> 
<a name="310" href="#310">310</a>                     String dcCreator =
<a name="311" href="#311">311</a>                         XMLHelper.getChildElementValueNS(
<a name="312" href="#312">312</a>                             itemElm,
<a name="313" href="#313">313</a>                             RSSHelper.XMLNS_DC,
<a name="314" href="#314">314</a>                             <span class="jxr_string">"creator"</span>);
<a name="315" href="#315">315</a> 
<a name="316" href="#316">316</a>                     <strong class="jxr_keyword">int</strong> lastArticleNumber = channel.getLastArticleNumber();
<a name="317" href="#317">317</a>                     <a href="../../../../../org/methodize/nntprss/feed/Item.html">Item</a> item = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/methodize/nntprss/feed/Item.html">Item</a>(++lastArticleNumber, signatureStr);
<a name="318" href="#318">318</a>                     channel.setLastArticleNumber(lastArticleNumber);
<a name="319" href="#319">319</a> 
<a name="320" href="#320">320</a>                     item.setChannel(channel);
<a name="321" href="#321">321</a> 
<a name="322" href="#322">322</a>                     <strong class="jxr_keyword">if</strong> (title.length() &gt; 0) {
<a name="323" href="#323">323</a>                         item.setTitle(title);
<a name="324" href="#324">324</a>                     } <strong class="jxr_keyword">else</strong> {
<a name="325" href="#325">325</a>                         <em class="jxr_comment">// We need to create a initial title from the description, because</em>
<a name="326" href="#326">326</a>                         <em class="jxr_comment">// we do have a description, don't we???</em>
<a name="327" href="#327">327</a>                         String strippedDesc =
<a name="328" href="#328">328</a>                             stripControlChars(XMLHelper.stripTags(description));
<a name="329" href="#329">329</a>                         <strong class="jxr_keyword">int</strong> length =
<a name="330" href="#330">330</a>                             strippedDesc.length() &gt; 64
<a name="331" href="#331">331</a>                                 ? 64
<a name="332" href="#332">332</a>                                 : strippedDesc.length();
<a name="333" href="#333">333</a>                         item.setTitle(strippedDesc.substring(0, length));
<a name="334" href="#334">334</a>                     }
<a name="335" href="#335">335</a>                     
<a name="336" href="#336">336</a>                     <em class="jxr_comment">// If empty description, set the description to the title.</em>
<a name="337" href="#337">337</a>                     <em class="jxr_comment">// This will also help out in scenarios where the title of the</em>
<a name="338" href="#338">338</a>                     <em class="jxr_comment">// RSS feed contains large content</em>
<a name="339" href="#339">339</a>                     <strong class="jxr_keyword">if</strong>(description.trim().length() &gt; 0) {
<a name="340" href="#340">340</a>                         item.setDescription(description);
<a name="341" href="#341">341</a>                     } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(title.length() &gt; 0) {
<a name="342" href="#342">342</a>                     	item.setDescription(title);
<a name="343" href="#343">343</a>                     } <strong class="jxr_keyword">else</strong> {
<a name="344" href="#344">344</a>                     	item.setDescription(<span class="jxr_string">""</span>);
<a name="345" href="#345">345</a>                     }
<a name="346" href="#346">346</a>                     
<a name="347" href="#347">347</a>                     item.setLink(link);
<a name="348" href="#348">348</a>                     item.setGuid(guid);
<a name="349" href="#349">349</a>                     item.setGuidIsPermaLink(guidIsPermaLink);
<a name="350" href="#350">350</a>                     item.setComments(comments);
<a name="351" href="#351">351</a>                     item.setCreator(dcCreator);
<a name="352" href="#352">352</a> 
<a name="353" href="#353">353</a>                     <strong class="jxr_keyword">if</strong> (pubDate == <strong class="jxr_keyword">null</strong>) {
<a name="354" href="#354">354</a>                         item.setDate(retrievalDate.getTime());
<a name="355" href="#355">355</a>                         <em class="jxr_comment">// Add 1 second - to introduce some distinction date-wise</em>
<a name="356" href="#356">356</a>                         <em class="jxr_comment">// between items</em>
<a name="357" href="#357">357</a>                         retrievalDate.add(Calendar.SECOND, 1);
<a name="358" href="#358">358</a>                     } <strong class="jxr_keyword">else</strong> {
<a name="359" href="#359">359</a>                         item.setDate(pubDate);
<a name="360" href="#360">360</a>                     }
<a name="361" href="#361">361</a> 
<a name="362" href="#362">362</a> 					<em class="jxr_comment">// Invoke ItemProcessor</em>
<a name="363" href="#363">363</a> 					invokeProcessors(item);
<a name="364" href="#364">364</a> 
<a name="365" href="#365">365</a>                     <em class="jxr_comment">// persist to database...</em>
<a name="366" href="#366">366</a>                     channelDAO.saveItem(item);
<a name="367" href="#367">367</a>                     channel.setTotalArticles(channel.getTotalArticles() + 1);
<a name="368" href="#368">368</a>                 }
<a name="369" href="#369">369</a>             }
<a name="370" href="#370">370</a> 
<a name="371" href="#371">371</a>         }
<a name="372" href="#372">372</a> 
<a name="373" href="#373">373</a>         <strong class="jxr_keyword">if</strong> (!keepHistory) {
<a name="374" href="#374">374</a>             <strong class="jxr_keyword">if</strong> (currentSignatures.size() &gt; 0) {
<a name="375" href="#375">375</a>                 <strong class="jxr_keyword">if</strong> (channel.getExpiration() == 0) {
<a name="376" href="#376">376</a>                     channelDAO.deleteItemsNotInSet(channel, currentSignatures);
<a name="377" href="#377">377</a> 					channel.setTotalArticles(currentSignatures.size());
<a name="378" href="#378">378</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (
<a name="379" href="#379">379</a>                     channel.getExpiration() &gt; 0
<a name="380" href="#380">380</a>                         &amp;&amp; (channel.getLastCleaned() == <strong class="jxr_keyword">null</strong> || channel.getLastCleaned().before(
<a name="381" href="#381">381</a>                             <strong class="jxr_keyword">new</strong> Date(
<a name="382" href="#382">382</a>                                 System.currentTimeMillis()
<a name="383" href="#383">383</a>                                     - Channel.CLEANING_INTERVAL)))) {
<a name="384" href="#384">384</a>                     channelDAO.deleteExpiredItems(channel, currentSignatures);
<a name="385" href="#385">385</a>                     channel.setLastCleaned(<strong class="jxr_keyword">new</strong> Date());
<a name="386" href="#386">386</a>                 }
<a name="387" href="#387">387</a>             }
<a name="388" href="#388">388</a>         }
<a name="389" href="#389">389</a>     }
<a name="390" href="#390">390</a> 
<a name="391" href="#391">391</a>     @Override
<a name="392" href="#392">392</a>     <strong class="jxr_keyword">public</strong> String processContent(Element itemElm) {
<a name="393" href="#393">393</a>         <em class="jxr_comment">// Check for xhtml:body</em>
<a name="394" href="#394">394</a>         String description = <strong class="jxr_keyword">null</strong>;
<a name="395" href="#395">395</a> 
<a name="396" href="#396">396</a>         NodeList bodyList =
<a name="397" href="#397">397</a>             itemElm.getElementsByTagNameNS(RSSHelper.XMLNS_XHTML, <span class="jxr_string">"body"</span>);
<a name="398" href="#398">398</a>         <strong class="jxr_keyword">if</strong> (bodyList.getLength() &gt; 0) {
<a name="399" href="#399">399</a>             Node bodyElm = bodyList.item(0);
<a name="400" href="#400">400</a>             NodeList children = bodyElm.getChildNodes();
<a name="401" href="#401">401</a>             StringBuffer content = <strong class="jxr_keyword">new</strong> StringBuffer();
<a name="402" href="#402">402</a>             <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> childCount = 0;
<a name="403" href="#403">403</a>                 childCount &lt; children.getLength();
<a name="404" href="#404">404</a>                 childCount++) {
<a name="405" href="#405">405</a>                 content.append(children.item(childCount).toString());
<a name="406" href="#406">406</a>             }
<a name="407" href="#407">407</a>             description = content.toString();
<a name="408" href="#408">408</a>         }
<a name="409" href="#409">409</a> 
<a name="410" href="#410">410</a>         <em class="jxr_comment">// Fix for content:encoded section of RSS 1.0/2.0</em>
<a name="411" href="#411">411</a>         <strong class="jxr_keyword">if</strong> ((description == <strong class="jxr_keyword">null</strong>) || (description.length() == 0)) {
<a name="412" href="#412">412</a>             description =
<a name="413" href="#413">413</a>                 XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"content:encoded"</span>);
<a name="414" href="#414">414</a>         }
<a name="415" href="#415">415</a> 
<a name="416" href="#416">416</a>         <strong class="jxr_keyword">if</strong> ((description == <strong class="jxr_keyword">null</strong>) || (description.length() == 0)) {
<a name="417" href="#417">417</a>             description =
<a name="418" href="#418">418</a>                 XMLHelper.getChildElementValue(itemElm, <span class="jxr_string">"description"</span>, <span class="jxr_string">""</span>);
<a name="419" href="#419">419</a>         }
<a name="420" href="#420">420</a>         <strong class="jxr_keyword">return</strong> description;
<a name="421" href="#421">421</a>     }
<a name="422" href="#422">422</a> 
<a name="423" href="#423">423</a> }
</pre>
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